User Manual

Chapter 5 To Trigger the Oscilloscope RIGOL
MSO2000A/DS2000A User’s Guide 5-19
Nth Edge Trigger (Option)
Trigger on the nth edge that appears after the specified idle time. For example, in the
waveform shown in the figure below, the instrument should trigger on the second
rising edge after the specified idle time (the time between two neighbouring rising
edges) and the idle time should be set to P<Idle Time<M. Wherein, M is the time
between the first rising edge and its previous rising edge and P is the maximum time
between the rising edges participate in the counting.
P
M
P<Idle Time<M
Edge Type=
Edge Num=2
Figure 5-5 Nth Edge Trigger
Trigger Type:
Press Type, rotate to select “Nth Edge” and press down . At this point, the
trigger setting information is displayed at the upper right corner of the screen. For
example,
. The trigger type is Nth edge trigger; the trigger source
is CH1; the trigger level is 1.94 V.
Source Selection:
Press Source and select CH1, CH2 or any channel of D0-D15. For the details, please
refer to the introduction in “
Trigger Source”. The current trigger source is displayed
at the upper right corner of the screen.
Note: Select channel with signal input as trigger source to obtain stable trigger.
Edge Type:
Press Slope to select the kind of edge of the input signal on which the oscilloscope
triggers.
 : trigger on the rising edge of the input signal when the voltage level meets
the specified trigger level.